M ar 1 99 8 Semileptonic decays , magnetic moments and spin distributions of spin - 1 / 2 baryons with sea contribution
نویسندگان
چکیده
Spin-1/2 baryons are considered as a composite system made out of a " core " of three quarks surrounded by a " sea " (of gluons and q ¯ q-pairs) which is specified by its total quantum numbers. Specifically, we assume this sea to be a flavor octet with spin-0 or 1 but no color. We show our model can provide very goods fits to magnetic moments and semileptonic decay data using experimental errors. The predictions for spin distributions are in reasonable agreement with experiment.
منابع مشابه
ep - p h / 98 03 42 9 v 1 2 3 M ar 1 99 8 Masses , Magnetic Moments , and Semileptonic Decays of Spin 1 / 2 Baryons with Sea Contribution
The spin 1/2 baryons are pictured as a composite system made out of a " core " of three valence quarks (as in the simple quark model) surrounded by a " sea " (of gluon and q ¯ q pairs) which is specified by its total quantum numbers. We assume the sea is a SU (3) flavor octet with spin 0 or 1 but no color. This model, considered earlier, is used to obtain simultaneous fits for masses, magnetic ...
متن کاملar X iv : h ep - p h / 96 03 25 2 v 1 8 M ar 1 99 6 Sea contributions to spin 1 / 2 baryon structure , magnetic moments , and spin distribution
We treat the baryon as a composite system made out of a " core " of three quarks (as in the standard quark model) surrounded by a " sea " (of gluons and q ¯ q-pairs) which is specified by its total quantum numbers like flavor, spin and color. Specifically, we assume the sea to be a flavor octet with spin 0 or 1 but no color. The general wavefunction for spin 1/2 baryons with such a sea componen...
متن کاملar X iv : h ep - p h / 96 03 25 4 v 1 9 M ar 1 99 6 Sea contributions to spin 1 / 2 baryon structure and magnetic moments
We treat the baryon as a composite system made out of a " core " of three quarks (as in the standard quark model) surrounded by a " sea " (of gluons and q ¯ q-pairs) which is specified by its total quantum numbers like flavor, spin and color. Specifically, we assume the sea to be a flavor octet with spin 0 but no color. The general wavefunction for spin 1/2 baryons with such a sea component is ...
متن کاملar X iv : h ep - p h / 96 03 25 2 v 2 4 M ay 1 99 6 Sea contributions to spin 1 / 2 baryon structure , magnetic moments , and spin distribution
We treat the baryon as a composite system made out of a " core " of three quarks (as in the standard quark model) surrounded by a " sea " (of gluons and q ¯ q-pairs) which is specified by its total quantum numbers like flavor, spin and color. Specifically, we assume the sea to be a flavor octet with spin 0 or 1 but no color. The general wavefunction for spin 1/2 baryons with such a sea componen...
متن کاملar X iv : h ep - p h / 99 06 38 6 v 1 1 6 Ju n 19 99 Electroweak moments of baryons and hidden strangeness of the nucleon
Electroweak moments of baryons and hidden strangeness of the nucleon. Abstract The phenomenological sum-rule-based approach is used to discuss the quark composition dependence of some static electroweak characteristics of baryons.The role of nonvalence degrees of freedom (the sea partons and/or peripheral meson currents) is shown to be important to select and make use of the relevant symmetry p...
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تاریخ انتشار 1997